In situ spacing-correcting heat pulse sensor and method for measuring sap flow or water flux

摘要

In situ spacing-correcting heat pulse sensor for measuring sap flow or water flux includes: a holder; a temperature probe or two (sometimes there will be more than two) mounted on the holder; and a heating probe mounted on the holder; wherein two or three thermometric elements are provided axially in the same temperature probe, all the thermometric elements are connected to a data collector, a heating wire is mounted in the heating probe, and the heating wire is connected to a power supply. A measuring method thereof is also provided. In practice, by arranging at least two thermometric elements in each temperature probe, measurement errors of sap flow in plant or soil water flux caused by factors such as deflection of the temperature probe or the heating probe are reduced. Furthermore, the sensor is simple in structure, low in cost, convenient in utilization, and accurate in measurement.

主权项

1. An in situ spacing-correcting heat pulse sensor for measuring sap flow or water flux, comprising:
a holder; a temperature probe or two or no less than two mounted on said holder; and a heating probe mounted on said holder; wherein two thermometric elements for inline deflection or three thermometric elements for non-inline deflection are provided axially in said same temperature probe, said all thermometric elements are connected to a data collector, a heating wire is mounted in said heating probe, and said heating wire is connected to a DC power supply or battery.